Death is not regarded as a natural affair by primitive man. Death is believed to be due to the intervention of some malevolent or at least not well disposed power. Normally it should not take place. So we have all through history crude explanations of death, as e.g., the influence of the serpent, the devil, sin.

No generation can do another generation's work for it. What we human beings can do at most is to mark out the pathway a little clearer for the generations to come after, and put legible signboards at the points where the greatest dangers have threatened us, in the hope that our posterity will read, understand, and be warned.

Skepticism literally means a thoughtful inquiry, the looking at a problem in a disinterested spirit, the surveying of a question from many sides. In this sense it is the very essence of philosophy and science.

A system of philosophy, or metaphysics, is a union of a world view and a life view in one harmonious, complete, integral conception. In so far as any man strives to attain, by rational inquiry, a consistent and comprehensive view of life and reality, he is a metaphysician.

Life appears in a vast variety and innumerable succession of individual forms, since the most salient character of the universe is just that it ceaselessly gives birth to living individuals.

Our obligation to the will of God is our obligation to the laws of practical reason.

The state is the nursing mother of human culture.